Science journalist covering space and physics for @sciam. Author of Five Billion Years of Solitude, a book on the search for alien Earths. Opinions are my own.

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@LeeBillings — 7,502 followers, 18,305 tweets

Nov 20, 2017

RT @FredRasio: “Sibling planets in the same system tend to have both masses and radii that are more similar than if the system wer…

Nov 20, 2017

@Beschizza Probably—we just haven't seen them yet. ;)

Nov 20, 2017

RT @tegmark: The US government seems asleep at the wheel regarding AI & job automation:  https://twitter.com/erikbryn/status/932336964786941953 

Nov 17, 2017

RT @hippke: Photogravimagnetic assists of light sails: a mixed blessing for Breakthrough Starshot?  http://arxiv.org/abs/1711.05856  with…

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